Telescopic post for stands and similar articles.



J. H. ASTRUGK. THLESOOPIG POST FOR STANDS AND SIMILAR ARTICLES. APPLIOATION FILED 00124, 1913.

1,103,246. Patented July 14,1914.

THE NORRIS PETERS CO.. PHOTO-LITHO WASHINGTON, D. C.

UNITED STATES! PATENT OFFICE.

JOHN H. ASTRUCK, OF NEW YORK, N. Y.

TELESCOPIC POST FOR STANDS AND SIMILAR ARTICLES.

T 0 all whom it may concern:

Be it known that I, JOHN H. AsTRUcK, a citizen of the United States, residing at New York city, county and State of New York, have invented a new and useful Telescopic Post for Stands and Similar Articles, of which the following is a specification.

This invention relates to a novel construction of telescopic posts for stands and other articles, the construction of the post being such that the component parts thereof, while freely slidable within one another are securely held against tilting, wabbling, withdrawal or axial displacement.

In the accompanying drawing which illustrates one example of my invention, Figure 1 represents a smokers stand provided with my improved post; Fig. 2 is a side view partly in section of the post; Fig. 3 a cross section on line 3, 3, Fig. 2, and Fig. t a detail of part of the inner post member.

The post comprises essentially two metallic telescoping tubular members 10, 11, the outer diameter of inner member 10, being substantially smaller than the inner diameter of outer member 11. The upper and inner member 10, is shown to carry a bowl 12, while the lower and outer member 11 may by a stud 13 be secured to a foot 14. Upon the' upper end of the lower member 11 is fixedly mounted a threaded collar 15 having a laterally extending flange 16. This collar is adapted to be engaged by the lower threaded end 17 of a tubular coupling 18, the thread of said coupling being formed within a lower chamber or enlargement 19 thereof, while above such chamber, the bore of the coupling is reduced as at 20 to here snugly encompass inner tube 10, and form an upper guide for the same. The lower end of inner tube 10, is slitted longitudinally for a suitable distance as at 21, to divide the same into a plurality of integral resilient jaws 22, which are bulged at their lower ends as at 23, and here frictionally engage the inner face of outer tube 11, so as to sustain the upper tube at any elevation to which it may have been set. In addition to the spring jaws 22, there are formed on the lower end of inner tube 10 and above bulges 25, a plurality of protuberances 24, that contact with the outer tube 11, and form a lower guide for the inner tube.

Across the lower end of tube 10, there extends a pin 25, that protrudes preferably from the inner tube into contact with the Specification of Letters Patent.

Patented July 14, 1914.

Application filed October 4, 1913. 7 Serial No.793,292.

outer tube, and thus likewise constitutes a guide for the inner tube. Pin 25, engages the slotted shank 26, of a buffer 27 which is influenced by a spring 28 that encircles shank 26, and tends to force the buffer outward.

When the post constructed as described is lengthened, coupling 18, and protuberances 24 will constitute respectively upper and lower guides that center the inner tube within the outer tube at different points and hold the tubes at all times in perfect axial 'alinement. During this lengthening operation, the total withdrawal of the inner tube from the outer tube is prevented, by the contact of protuberances 24 (or pin 25) with the roof 29 of the chamber 19 in coupling 18, so that in this way the coupling besides constituting a guide for the inner tube assumes the additional function of forming an abut ment or stop for the same.

When the post is shortened, the parts will operate in a manner similar to that described, while upon a complete contraction of the post, the buffer will prevent any violent contact between the lower end of the inner tube with the bottom of the outer tube.

It is evident that my invention may be applied to posts made up of a greater number of sections' than two, and that it may be embodied in telescopic posts and tubings generally used for a variety of purposes.

I claim:

1. A telescoping post comprising an outer tubular member, a collar mounted thereon, an inner tubular member, coupling means on said inner tubular member adapted to engage the collar, the inner tubular member being provided at its telescopcd end with a plurality of spring jaws, and also with a plurality of protuberances that are adapted to jointly engage the outer member, said protuberances likewise constituting abutments coacting with the collar, to prevent a complete withdrawal of the inner member from the outer member.

2. A telescoping post comprising an outer tubular member, a threaded collar mounted thereon, an inner tubular member of substantially less outer diameter than the inner diameter of the outer member, a tubular coupling having a reduced upper bore that snugly encompasses the inner member, and a lower threaded chamber that engages the threaded. collar, the inner member being provided at its lower end with a plurality of spring aWs that frictionally contact With ner member from the outer member is pre the'outer member, and with a plurality of vented.

additional outwardly projecting guides that JOHN H ASTRUOK slidably engage the outer member, said 5 guides being adapted to enter the collar- Witnesses:

chamber and abut against the roof thereof, FRANK v. BRIESEN,

whereby a complete Withdrawal of the, in- ARTHUR E. ZUMPE.

coples ot thil patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. 0. 

